Color-by-numbers apps are really popular on the App Store right now, with four different apps rising to the top of the free apps chart. The apps have a combined 3.2 million downloads over the past ...

Retro’s Splat app turns your photos into AI coloring pages for kids, with quick style options and print or on-screen modes.

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Coloring apps — which let ...

A detail of the Mandelbrot set, a fractal named after Benoit Mandelbrot, the French mathematician who investigated it in the 1970s. If you were to zoom in at any ...

A fun activity with a Halloween theme with this set of free printable mystery picture color by numbers Halloween worksheets. Color in squares with the different colors that correspond with numbers to ...

In a recent article, mathematicians explain the use of tools from the branch of mathematics called graph theory to systematically analyze Sudoku puzzles. They also find that analyzing Sudokus leads to ...